Lub npe scientific ntawm automotive urea yog diesel tso pa kho kua

Lub npe scientific ntawm automotive urea yog diesel tso pa kho kua. Nws yog siv nyob rau hauv diesel xyaw. Nws yog cov kua siv hauv SCR thev naus laus zis los txo cov pa nitrogen oxide hauv lub tsheb diesel. Nws muaj pes tsawg leeg yog 32.5% high-purity urea thiab 67.5% deionized dej.
Diesel tso kua dej kho (feem ntau hu ua automotive urea, automotive urea, automotive environmental protection urea in China) yog ib qho khoom siv hauv SCR technology.
Yog tias cov kua roj diesel tso tawm tsis tau thauj khoom, lossis qhov purity tsis txaus, lossis qhov tsis zoo, lub cav tsheb yuav cia li qeeb. Nyob rau tib lub sijhawm, cov kua dej tsis zoo ntawm cov roj tso tawm yuav ua rau cov catalyst nyob rau hauv SCR catalytic reactor, ua rau muaj qhov tshwm sim loj.
Qhov tseeb, hauv Tebchaws Europe, txoj cai no tau raug coj los siv txij li xyoo 2006. European diesel tso kua dej kho mob hu ua Adblue. Cov neeg sawv cev tseem ceeb yog BP, thiab lwm yam.
Hauv Tebchaws Meskas, txij li xyoo 2010, nrog rau kev siv EPA2010 cov qauv, daim ntawv thov thiab kev siv cov khoom no kuj tau ntxiv dag zog. Hauv Teb Chaws Asmeskas, cov kua dej tso tawm yog hu ua DEF (Diesel Exhaust Fluid). Cov neeg sawv cev tseem ceeb suav nrog BlueDEF thiab lwm tus.